Right now I have a crowdsourced appeal going on for funds to support my ongoing research into the carnivorous behaviour of those most charismatic of dinosaurs, the tyrannosaurs. The behaviour of fossil animals is one of those things that tends to do rather badly in the public eye: it is seen as mere guesswork and it's not helped by the occasional exaggeration or fictionalisation by the media or documentaries (and yes, occasionally, academics too). However, like a lot of aspects of palaeontology, an understanding of the available data and how it is interpreted reveals that much can be said for certain or at least considered highly probable.